File: T6315770.java

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/**
 * @test /nodynamiccopyright/
 * @bug     6315770
 * @summary javac inference allows creation of strange types: Integer & Runnable
 * @author Maurizio Cimadamore
 *
 * @compile/fail/ref=T6315770.out T6315770.java -XDrawDiagnostics
 */

class T6315770<V> {
    <T extends Integer & Runnable> T6315770<T> m() {
        return null;
    }
    void test() {
        T6315770<?> c1 = m();
        T6315770<? extends String> c2 = m();
        T6315770<? super String> c3 = m();
    }
}